Internal-combustion motor.



c. H. m15 w. M. um'ria.

INTERNAL COMBUSTION MOTOR.

APPLICATION FILED MAY 8, iSI.

)meme-d Get. 29, 1915.

5 SHEETS-SHEET I.

C. HVTHIE L W. IVI. BUITLER.

INTERNAL COMBUSTION MOTOR.

APPLICATION FILED MAY 8. I9l6.

Patented Oct. 29, 1918.

SSHEETS-SHEET 2.

pm M6 H/HTI C. H. THE W. Wl. BUTTLER. INTERNAL COMBUSTlUN MOTOR. AP PL|CAT10N FILED MAY8.19;6.

5 SHEETS-SHEET 3.

Patented Oct. 29, 1918.

C. H. THIE & W. M. BUTTLER.

INTERNAL COMBUSTION MOTOR.

APPLICATION FILED MAY B. 19H5.

Si* o Patented 001329,!918.

5 SHEETS-SHEET 4.

C. H. THIE & W. Wl. BUTTLER. INTERNAL comuslow MOTOR.

`APPLICATION FILED MAY 8. l9l6.

Patented Oct. 29, 1916.

5 SHEETS-SHEET 5.

CHAIR-'LES H. TI-HE ANI) WLLARD lill. BITLER, F TOLEDO, (ll-HO.

Specification of Letters Patent.

,Patenten oen iaia Application led may 8, wie. Serial No. 96,008.

2"() all whom 'it' may concern.'

Be it known that l, CHARLES H. Tram, a citizen of the United States, residing at Toledo, in the county of Lucas and State of l@'hio, and l., "Wittem M. BUTTLER, a citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio, have invented a nenv and useful improvement in an liiternalilonihustion Motor, of which the following is a speciiication.

@ur invention relates to va two-cycle internal combustion motor and has for its oloject to provide a motor of the kind with opposed cranks, rods coupled to pistons draw a charge for pre-compression and a volume of air for ilushine, The invention further comprises nen7 and novel features embodied in the construction of the motor.

The objects of our invention are accomplished as hereinafter described and illustrated in the drawings in which,

Figure l, is a cross section of the motor shown the pistons in the tiring position.

Fig. E, a partial section showing the pistons at the end of their respective strokes and show'ng gear transmis; on for the aux-- iliaiy sh: t drive for the water pump, the niechani in actuating the flushing air valve and the ignition.

Fig. f2, side elevation of the motor, part of the crank case being iii/,section to shoe' the opposed cranks. i

i, is a top plan fiesv of the motor showing the air valve and a part oi the cylinders in section. i

Fig. 5, is a parial section of the outer piston showing the diaphragm for directing ine course. ci' the cooling Water.

Fig. il is also a section ci" outer piston in the horizontal piane howing the water inlei` and the iva-ter ont coupliid tl'zereto, and

iig. 7.

w veeticai cross section el" the air valve showing the relative position of the ports in the valve to the ports in the valve body.

The drawings shopT a two-cylinder motor constructed in accordance with our invention. The crank shaft l ol. the motor has opposed cranks 2 and 3 respectively for each one of the cylinders and is journaled in a rear hearing 4 and a front hearing not shown. The crank shaft is inclosed by the bottom half 5 of the crank case, which is provided with a diaphragm 6 having oi] wells 7 located in line with the stroke o1 the respective cranks; said diaphragm being also adapted to form the top of an oil reservoir 8 in the bottom of the lower half of the cra-nk case. Y'

Each cylinder 9 'is provided with a dii:- erential bore for a compressing chamber l for scavenging air, being each provided with an inlet port 1l and an outlet port l2. 'llhe top of each cylinder serves as a compressor chamber 13 having each an inlet port lll for carloureted air and lay-pass ports l and 16.

These ports communicate with receivers 17 each having a sub-chamber Wall 18 around the respective port 16, the face opening ot' each of said chamber Walls he ing provided with, a foraminous fabric 19 to prevent hack lire 'from the combustion chamber.

Each cylinder is further provided with an ignition port 2O and exhaust ports 2l.

yllhe pistons 22 conform to the diiierentia tion of the respective hores of the cylinders and each being annular provides a cylinder 28 and a combustion chamber lllacli piston 2Q is provided with a port 25 so disposed that when the piston is in the posi.- tion shown in Fig. 2, saidfport is in line with the ignition port 20. Each piston is further provided with. an exhaust port 26 adapted to register with the exhaust port 2l in the respective cylinder 9, when the piston 22 is in the position shown in Fig L The relative spacing of the ignition port from the exhaust port is such as to register the ignition port with the port lo when the respective exhaust ports are in register at the end ,of the rip-stroke of the piston The hase of each of said pistons is pro vided with a recess 27 adapted to receive the tongue Q8 oi' a clamp ring 29. Each ring is provided with diametricalij/ op posite trunnions 30 on which are 'fulcrumed lll) the respective connecting rods 31. These rods are pivoted upon thecranks 2 and arecoupled to the respective trunnions. Upon the crank 3 is pivoted a rod 32 connecting 5 thereto the iston 33 movable in the cylinder 23. he piston 22 being annular provides a surrounding water chamber 34. Each water chamber is provided with diaphragms 35 which are arranged inv part vertically and in part laterally to deflect cooling water from the inlet port 36 to the top of the water chamberand from there to direct the cooling water toward the bottom of the piston and then up to the outlet port 37. A header 38 is coupled to each piston 22, having an inlet chamber 39 and an outlet chamber 40. A tube 41 and a tube 42 respectively depend from said chambers, each tube being telescopically movable in a fixed header 43, having bores 44 and 45 to receive the respective tubes 41 and 42. The bores 44 and 45 of the header are respectively coupled to the intake water pipe 4G and to the outlet water pipe 47.

llach cylinder 9 is slotted to permit movement of the header 38.

48 designates a valve body coupled to the cylinders 9 being provided with a rock valve 49 and having opposite ports 50 each of 30 ywhich is tube-coupled to the respective outlet. port 12 of the respective compressor 10.

The rock-valve is provided With outlet ports 5]. and 52 and inlet ports 53 and 54 whereby when the valve is rocked, compressed air is directed into alternate cylinders for flushing.

rlhe compressed flushing air is permitted to enter cach respective cylinder after the exhaust port of one of the cylinders is partially opened and before ythe ignition port commences to register with the respective transfer port 1G, each cylinder 9 and each piston 22 being provided with ports 55 and 5G respectively for inlet ol' fiushing air.

57 designates a drive for the auxiliary shaft 58 adapted to impel the water cireulating pumi 59 and the iffnition magneto GO or a distri uter. The shaft is also pro 50 vided with an eccentric 6l adapted to impart motion to the rock valve by means of a rod 62 which latter is articularly coupled to the eccentric and to the valve arm 63.

The operation of our motor is as tollows: The respective pistons, in the position shown in Fig. 1, are impelled in opposite directions by the ignition of the charge in the combustion chamber effecting a balanced impulse of motion upon the crank shaft, and as the end of the power stroke approaches, the exhaust ports are lrst registered, following by the valve controlled admission ot scavenging air before the transfer port lt registers with the igni- '5 tion port at the end of the stroke to permit the pre-compressed new charge to enter'the combustion chamber'. The s'cavengine'l air is'thereby interposed between the exkhanst and the new charge, insuring thereby not only its purity but prevents loss through the exhaust ports. 0n the return stroke the new charge is compressed and the scavenging .compressor and the pre-compressor of new charges are lilled `through their respective port-s.

What We claim ism l. A two cycle interna-l combustion motor comprising opposed cranks,- a fixed main cylinder having a differential bore, its top being adapted for a pre-compressor of new charges and its larger bore as a compressor for flushing air, a piston movable in said cylinder, its step diameters conforming to lthe diti'ei'ential bores of the fixed cylinder, being annular, and having an interior cylinder adapted for a combustion chamber, a piston movable in said interior cylinder, ports in the walls of the step piston and its receiving cylinder, adapted to register for ignition, for exhausting, and for recharging` the interior cylinder {iushing ports in the fixed cylinder and in the step piston adapted to register in the travel of the ste piston,`opening;in the 11p-travel of said piston after the exhaust ports are in part registered and te close before the intake ports .are in register, a rock valve for the flushing air, having ports adapted to open when the flushingI ports of the cylinder and the step piston are in register in the upstroke o the step piston and to be closed when the ports of the cylinder and the step piston are ire-registered in the downl stroke or' the step piston, connection between the compressor of the dashing charge and the inlet port of the rock valve, an auxiliar* shaft having means for actuating the roc valve, connecting rods iiol' coupling the step piston and the inside piston tothe respective crankC and means for cooling "the walls of the step piston.

A two cycle pmotor, comprising a. tired cylinder having a step bore and a step piston movable therein, forming conjointly a top pre-compressor for a new charge and a bottom compressor for flushing air, being each provided with ports registerable for ignition and transfer of a, new charge, ports :tor enluuisting, ports for tlushing and a valve controlled passage for liushing air, said step piston being; formed with an interior cylinder surrounded by a water chamber extending 'from the step over the top of the interior cylinder, diaphragme arranged to divide the water chamber and direct cooling water upward at one side of the diaphragm and downward the other side thereof, a header .coupled to the step piston, having ports for thel inlet and the outlet of coiiling water, registering with ports in the piston at opposite sides of the diaphragm and having ofi"- Laeaees cranks, a lxedrcylinder having a step bore,A

a step piston` movable therein, having an interior cylinder surrounded by a water jacket extending upward from the step and receiving and discharging cooling water on the saine side ol the jacket, the latter being provided by a diaphragm separating the inlet from the outlet water, a skirt depending from the step piston, its bore being of the diameter of the interior cylinder, a recess :formed in the outer face of the skirt eXtension,.a clamp ring meshing in said recess, said clamp ring being provided with opposite trunnions, a connecting rod journaled to cach ett said trunnions and to cranks respectively arranged one to each side of the central opposed crank, a piston movable-in the interior cylinder and' a piston rod for coupling the piston to the central opposed crank.

L [a two cycle motor, comprising opposed cranks, a fixed cylinder having a stepL bore, a step piston movable in the cylinder, forming a top precompressor and a bottom scavenging air compressor', a cylinder formed in the interior of the step piston, a piston movable in said interior cylinder, rods for coupling the step piston to the outside cranks and a rod coupling the inner piston to the central opposed crank, an ignition port formed through wall of the step piston being adapted for transfer port at the end of the upstroke of thel step piston, exhaust ports through the wall of the step piston registerable with exhaust ports in the iixed cylinder wall, flushing ports in the step piston and in the fixed cylinder, being registerable after the exhaust ports are in part opened and pressure is reduced, a valve body coupled to the cylinder, being orted to the cylinder flushing air ports an ported to the scavenging air compressor a valve in the,valve body, having ports arranged to admit air to inlet flush ng ports when said ports are in register during the upstroke of the step piston and to close the said inlet ports when the step piston travels downward, an auxiliary shaft\55 having means to actuate said valve.

ln witness whereof, we have hereunto set our hands and aiiixed our seals this 12 day of Feb. 1916.

CHARLES H. THIE. [Ls] VVILLARD M. BUTTLER. [n a] Witnesses:

HERMAN H. MARTIN, N. S. BRAGKNEY. 

